Selective mode excitation by nonaxial evanescent coupling for bandwidth enhancement of multimode fiber links
Abbreviated Journal Title
local area networks; optical fibers; evanescent coupling; gradient index; OPTICAL FIBERS; LAUNCH; Optics
We present an analysis of conditioned launch in a gradient-index multimode fiber (MMF). Selective mode excitation is obtained by nonaxial evanescent coupling between two highly asymmetric side-polished fibers: a single-mode fiber and an MMF with an exposed core. An index-matching slab improves the coupling efficiency and selectivity. The simulation shows that about 40% of modes, only high-order modes, are excited in the MMF. When compared to an overfilled launch, the bandwidth of a perturbed index fiber is enhanced more than twofold for large parameter variations. (C) 2002 Society of Photo-Optical Instrumentation Engineers.
"Selective mode excitation by nonaxial evanescent coupling for bandwidth enhancement of multimode fiber links" (2002). Faculty Bibliography 2000s. 3516.